import java.util.Objects;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 19182
 * Date: 2025-08-06
 * Time: 21:34
 */
class student{
    public String id;
    public student(String id){
        this.id = id;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        student student = (student) o;
        return Objects.equals(id, student.id);
    }

    @Override
    public int hashCode() {
        return Objects.hash(id);
    }
}
public class Test {
    public static void main(String[] args) {

    }
}
